Political Liberalism

Political Liberalism is a book published in 1993 by the American philosopher John Rawls. It presents itself as both a sequel and a revision of his earlier work, A Theory of Justice (1971), which it seeks to place within a context of political pluralism. Rawls developed the material over several years through lectures and drafts, aiming to answer objections raised against his theory and to clarify in what sense it can be defended in democratic societies marked by a diversity of religious, moral and philosophical beliefs.

The central claim is that his theory of justice is not a "comprehensive conception of the good", that is, a doctrine meant to explain the whole of human life, but a political conception of justice compatible with a liberal view of the state's role: government should remain neutral among the competing conceptions of the good that citizens hold. For Rawls, the two principles of justice, properly understood, form a theory of the right that reasonable individuals could endorse even when they disagree about their deepest convictions. The mechanism that makes such endorsement possible is what he calls the "overlapping consensus", in which different comprehensive doctrines each support, from within their own foundations, the same core of political principles. The book also develops his notion of public reason, according to which arguments used in debating constitutional questions and matters of basic justice should be grounded in values that all citizens can in principle share.

The work is organized around the idea of reasonable pluralism, which Rawls distinguishes from mere pluralism as a matter of fact: modern democratic societies contain diverse doctrines, and the free exercise of reason under institutions of liberty tends to produce such diversity without this implying irrationality. The book has been highly influential in contemporary political philosophy and has fueled debates about the stability of plural societies, the place of religion in public deliberation and the limits of state neutrality. Some critics have pointed to tensions between the political constructivism it proposes and claims to moral objectivity, while others have valued its effort to offer a basis for coexistence that does not require agreement on ultimate questions.